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Nostria Signer

Chrome extension by Blockcore · Productivity · Tools

A Chrome extension in Productivity · Tools with 14 users, barely installed. Audience over the last 30 days: +2.

No site access is declared in the manifest, so it cannot read the pages you open on its own.

What the developer says, and 3 screenshots

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users
14
Rating
5.0 (1 ratings)
Users, last 30 days
+2
Rating, last 30 days
Steady over 30 days
Version
3.0.6
Updated in the store
2026-03-12
Published
2026-02-18
Manifest
V3
Browser access
4 permissions

How it has moved

Users
+2 since 04.10
12-17 · 17 readings
  1. 2026-10-0516
  2. 2026-10-0815
  3. 2026-10-0916
  4. 2026-10-1014
  5. 2026-10-1313
  6. 2026-10-1615
  7. 2026-10-1716
  8. 2026-10-1817
  9. 2026-10-1916
  10. 2026-10-2117
  11. 2026-10-2214
  12. 2026-10-2313
  13. 2026-10-2412
  14. 2026-10-2813
  15. 2026-10-2914
  16. 2026-11-0114
  17. 2026-11-0214
Rating
unchanged since 04.10
reviewsrating 5.00 · 17 readings
  1. 2026-10-05reviews1rating5.00
  2. 2026-10-08reviews1rating5.00
  3. 2026-10-09reviews1rating5.00
  4. 2026-10-10reviews1rating5.00
  5. 2026-10-13reviews1rating5.00
  6. 2026-10-16reviews1rating5.00
  7. 2026-10-17reviews1rating5.00
  8. 2026-10-18reviews1rating5.00
  9. 2026-10-19reviews1rating5.00
  10. 2026-10-21reviews1rating5.00
  11. 2026-10-22reviews1rating5.00
  12. 2026-10-23reviews1rating5.00
  13. 2026-10-24reviews1rating5.00
  14. 2026-10-28reviews1rating5.00
  15. 2026-10-29reviews1rating5.00
  16. 2026-11-01reviews1rating5.00
  17. 2026-11-02reviews1rating5.00
Users
-8 since 31.08
12-26 · 29 readings
  1. 2026-08-3122
  2. 2026-09-0226
  3. 2026-09-0523
  4. 2026-09-0621
  5. 2026-09-0823
  6. 2026-09-0925
  7. 2026-09-1021
  8. 2026-09-1718
  9. 2026-09-2216
  10. 2026-09-2514
  11. 2026-09-2613
  12. 2026-09-2812
  13. 2026-10-0516
  14. 2026-10-0815
  15. 2026-10-0916
  16. 2026-10-1014
  17. 2026-10-1313
  18. 2026-10-1615
  19. 2026-10-1716
  20. 2026-10-1817
  21. 2026-10-1916
  22. 2026-10-2117
  23. 2026-10-2214
  24. 2026-10-2313
  25. 2026-10-2412
  26. 2026-10-2813
  27. 2026-10-2914
  28. 2026-11-0114
  29. 2026-11-0214
Rating
unchanged since 31.08
reviewsrating 5.00 · 29 readings
  1. 2026-08-31reviews1rating5.00
  2. 2026-09-02reviews1rating5.00
  3. 2026-09-05reviews1rating5.00
  4. 2026-09-06reviews1rating5.00
  5. 2026-09-08reviews1rating5.00
  6. 2026-09-09reviews1rating5.00
  7. 2026-09-10reviews1rating5.00
  8. 2026-09-17reviews1rating5.00
  9. 2026-09-22reviews1rating5.00
  10. 2026-09-25reviews1rating5.00
  11. 2026-09-26reviews1rating5.00
  12. 2026-09-28reviews1rating5.00
  13. 2026-10-05reviews1rating5.00
  14. 2026-10-08reviews1rating5.00
  15. 2026-10-09reviews1rating5.00
  16. 2026-10-10reviews1rating5.00
  17. 2026-10-13reviews1rating5.00
  18. 2026-10-16reviews1rating5.00
  19. 2026-10-17reviews1rating5.00
  20. 2026-10-18reviews1rating5.00
  21. 2026-10-19reviews1rating5.00
  22. 2026-10-21reviews1rating5.00
  23. 2026-10-22reviews1rating5.00
  24. 2026-10-23reviews1rating5.00
  25. 2026-10-24reviews1rating5.00
  26. 2026-10-28reviews1rating5.00
  27. 2026-10-29reviews1rating5.00
  28. 2026-11-01reviews1rating5.00
  29. 2026-11-02reviews1rating5.00

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing up to 2 times a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

No site access is declared in the manifest, so it cannot read the pages you open on its own.

Show the remaining 1

The full permission history for this extension

What changed recently

Nothing has moved on this listing since we started watching it.

The publisher

Blockcore publishes 3 listings we track, 176 users between them.

  1. Blockcore Wallet Blockcore · Productivity · Workflow · published 2022-04-29 142 users ★ 5.0
  2. Free City Wallet Blockcore · Productivity · Tools · published 2022-05-23 20 users ★ 5.0

Like this one

Listings the catalog judges closest in what they say they do.

  1. nos2x Describes nearly the same job, smaller audience 9k users ★ 4.8
  2. NostrKey Describes nearly the same job, smaller audience 54 users
  3. Keys.Band Describes nearly the same job, smaller audience 972 users ★ 5.0
  4. NostrWallet Describes nearly the same job, smaller audience 4 users
  5. Nostr Map Signer Describes nearly the same job, smaller audience 39 users

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

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Users and rating on Ext Ops Panel

Markdown

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HTML

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Figures come from our own regular passes over the public Chrome Web Store listing, last read on . The store last changed these figures on 2026-11-01. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built